Storing resource information

ABSTRACT

In an illustrative embodiment, a data processing system for resource data management is provided. The data process system comprises a set of data structures defining resource relationships and locations for a set of resources to form defined resource relationships and defined locations for the set of resources, and a receiver capable of obtaining replaceable unit data and obtaining characterization data for a current resource in the set of resources to form obtained replaceable unit data and obtained characterization data for the current resource, wherein the obtained replaceable unit data is obtained from a secure device and the obtained characterization data is obtained from an unsecure device. The data processing system further comprises a writer capable of merging the obtained replaceable unit data for the current resource with the obtained characterization data for the current resource for each resource of the set of resources to form a set of data files, wherein each data file corresponds to a resource in the set of resources.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates generally to a data processing system andmore specifically, to a computer implemented method, an apparatus and acomputer program product for resource data management.

2. Description of the Related Art

On several models of computing systems, resources known as fieldreplaceable units (FRU) are present. Field replaceable units may containcomponents including backplanes, service processors, one or moreprocessors, memory, and input/output devices. Field replaceable unitsare typically circuit boards, parts or assemblies that may be quicklyand easily removed and swapped with replacements. Other examples offield replaceable units range from keyboards and mice to memory modules,processors and mother boards. Each field replaceable unit may have fieldreplaceable unit vital product data (VPD) defining the resource.

Vital product data is a set of resource attributes. Vital product datais descriptive information describing a resource, in the form of aresource identifier, and attributes specific to the type of resource.The descriptive information for a resource may include how otherresources plug into the specific resource, and identifies the type offield replaceable unit, the part number, the serial number, as well asdescriptive information for product release level and maintenance level.Other resource specific vital product data may include wiring and accessinformation defining how to get to a next attached device. User specificinformation may also be available such as location of the resourcewithin the system. Vital product data then may be viewed as having twotypes of data. A first type of data is that which relates to areplaceable unit and may be contained on a secure device. The secondtype of data is characterization data specific to a resource and may becontained on a unsecure device such as a serial electrically erasableprogrammable read-only memory (SEEPROM).

In addition, some field replaceable units comprise multiple embeddedresources which must be handled on a single resource basis by firmwarerunning on a service processor. For example, a backplane fieldreplaceable unit may have multiple processor modules soldered onto thebackplane. Each processor module has one or more processor cores. Eachprocessor module further contains module vital product data which hascharacterization data unique to the processor module. The vital productdata component in the service processor code assigns a unique resourceidentifier (RID) to each of the processor modules. The vital productdata component provides access to the field replaceable unit vitalproduct data for each processor resource identifier and access to thecharacterization data from the module vital product data for eachprocessor resource identifier.

In one example, a processor field replaceable unit is a processorbackplane with multiple processor modules soldered onto the backplane.The processor modules are not readily removed from the backplane. Inthis example there is a secure device accessible by the vital productdata component in the service processor which contains the fieldreplaceable unit vital product data for the field replaceable unit. Thesecure device is required to contain the field replaceable unit vitalproduct data which identifies the operational characteristics such asthe number of processor cores to be used on each processor module andthe speed at which the processors are to be run. Each processor modulecontains a serial electrically erasable programmable read-only memorywhich contains processor characterization data that is unique to aprocessor module. The module information is referred to as module vitalproduct data. The vital product data component in the service processorprovides access to this module vital product data.

Because the characterization data is customized to a specific processormodule, the system firmware requires a unique resource identifier foreach processor module. For example, a system model may have a singleinstance of processor field replaceable unit vital product data andmultiple processor resource identifiers associated with the processorfield replaceable unit. A problem occurs because each processor moduleused needs to be reported to the system kernel code with a correct fieldreplaceable unit vital product data correspondence.

In another example system, the structure may become more complicated. Inthis example, the processor modules are pluggable field replaceableunits. There is a backplane field replaceable unit with a serialelectrically erasable programmable read-only memory device containingthe backplane vital product data and the processor module fieldreplaceable units. The processor modules contain serial electricallyerasable programmable read-only memory with the processorcharacterization data, but the processor modules do not contain anyfield replaceable unit vital product data. In this example, allprocessor modules use the same number of processor cores and run at thesame speed. A single secure device is plugged into the processorbackplane to contain the field replaceable unit vital product data thatis common to all processor field replaceable units. While the fieldreplaceable unit information is common, the module information is not.The module vital product data contains a part number and a serial numberwhich uniquely identifies the processor field replaceable unit, which isthe processor module in this case. However, the module vital productdata does not have a separate secure place to hold the data for thenumber of processor cores to run or the processor core speed. Therefore,on this example computer system, each processor module represents aunique field replaceable unit and a resource identifier. The problem ishow to pass the correct processor field replaceable unit vital productdata on to the system kernel for each processor core to be used.

When the vital product data for different field replaceable units is notunique, that is not having a unique serial number within a group offield replaceable units with a common part number, other components suchas the system kernel will not be aware of the correct number of fieldreplaceable units in the set of processors. On systems where eachprocessor module is a separate field replaceable unit, each processorfield replaceable unit reports unique vital product data. Failure toreport the correct field replaceable unit vital product data for eachprocessor resource identifier will impact the ability to initialize asystem, the performance and capacity to upgrade on demand capability ofthe system, and the serviceability of the system.

BRIEF SUMMARY OF THE INVENTION

In an illustrative embodiment, a computer implemented method forresource data management is provided. The computer implemented methoddetermines whether a resource entry in a first data structure for a setof resources is unique in which the resource entry is a currentresource, and responsive to a determination that the current resource isunique, identifies a corresponding entry in a second data structure. Thecomputer implemented method further stores a replaceable unit data forthe current resource to form a current data file, determines whether thecorresponding entry contains a copy indicator, and responsive to adetermination that the corresponding entry contains a copy indicator,copies the current data file into a set of data files, wherein each datafile represents a resource identified by the copy indicator. Thecomputer implemented method further determines whether the correspondingentry has a modify indicator, and responsive to a determination that thecorresponding entry has a modify indicator, updates each data file inthe set of data files with a characterization data for a respectiveresource in the set of data files.

In another illustrative embodiment, a data processing system forresource data management is provided. The data processing systemcomprises a bus, a memory connected to the bus, wherein the memorycomprises computer-executable instructions, a communications adapterconnected to the bus, a display adapter connected to the bus, aprocessor connected to the bus, wherein the processor executes thecomputer-executable instructions to direct the data processing system todetermine whether a resource entry in a first data structure for a setof resources is unique in which the resource entry is a currentresource, responsive to a determination that the current resource isunique, identify a corresponding entry in a second data structure, storea replaceable unit data for the current resource to form a current datafile, determine whether the corresponding entry contains a copyindicator, and responsive to a determination that the correspondingentry contains a copy indicator, copy the current data file into a setof data files, wherein each data file represents a resource identifiedby the copy indicator, determine whether the corresponding entry has amodify indicator and responsive to a determination that thecorresponding entry has a modify indicator, update each data file in theset of data files with a characterization data for a respective resourcein the set of data files.

In yet another illustrative embodiment, a computer program product forresource data management is provided. The computer program productcomprises a computer-readable recordable type medium, tangibly embodyingcomputer-executable instructions thereon. The computer-executableinstructions comprise computer-executable instructions for determiningwhether a resource entry in a first data structure for a set ofresources is unique in which the resource entry is a current resource,computer-executable instructions responsive to a determination that thecurrent resource is unique, for identifying a corresponding entry in asecond data structure, computer-executable instructions for storing areplaceable unit data for the current resource to form a current datafile, computer-executable instructions for determining whether thecorresponding entry contains a copy indicator, computer-executableinstructions responsive to a determination that the corresponding entrycontains a copy indicator, for copying the current data file into a setof data files, wherein each data file represents a resource identifiedby the copy indicator, computer-executable instructions for determiningwhether the corresponding entry has a modify indicator,computer-executable instructions responsive to a determination that thecorresponding entry has a modify indicator, for updating each data filein the set of data files with a characterization data for a respectiveresource in the set of data files.

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

FIG. 1 is a bock diagram of a data processing system including aflexible service processor in accordance with illustrative embodiments;

FIG. 2 is a block diagram of components of a vital product data manager,in accordance with illustrative embodiments;

FIG. 3 is a block diagram of a hardware environment of a processorsubsystem, in accordance with illustrative embodiments;

FIG. 4 is a block diagram of a hardware environment of a processorsubsystem, in accordance with illustrative embodiments;

FIG. 5 is a textual representation of data tables and arrays is shown inaccordance with illustrative embodiments;

FIG. 6 is a block diagram of data table and vital product datarelationships, in accordance with illustrative embodiments;

FIG. 7 is a block diagram of a vital data product manager and processorsubsystem in accordance with illustrative embodiments; and

FIGS. 8A and 8B are flowcharts of a process of vital product datamanagement, in accordance with illustrative embodiments.

DETAILED DESCRIPTION OF THE INVENTION

As will be appreciated by one skilled in the art, the present inventionmay be embodied as a system, method or computer program product.Accordingly, the present invention may take the form of an entirelyhardware embodiment, an entirely software embodiment (includingfirmware, resident software, micro-code, etc.) or an embodimentcombining software and hardware aspects that may all generally bereferred to herein as a “circuit,” “module” or “system.” Furthermore,the present invention may take the form of a computer program productembodied in any tangible medium of expression having computer-usableprogram code embodied in the medium.

Any combination of one or more computer-usable or computer-readablemedium(s) may be utilized. The computer-usable or computer-readablemedium may be, for example but not limited to, an electronic, magnetic,optical, electromagnetic, infrared, or semiconductor system, apparatus,device, or propagation medium. More specific examples (a non-exhaustivelist) of the computer-readable medium would include the following: anelectrical connection having one or more wires, a portable computerdiskette, a hard disk, a random access memory (RAM), a read-only memory(ROM), an erasable programmable read-only memory (EPROM or Flashmemory), an optical fiber, a portable compact disc read-only memory(CDROM), an optical storage device, a transmission media such as thosesupporting the Internet or an intranet, or a magnetic storage device.Note that the computer-usable or computer-readable medium could even bepaper or another suitable medium upon which the program is printed, asthe program can be electronically captured, via, for instance, opticalscanning of the paper or other medium, then compiled, interpreted, orotherwise processed in a suitable manner, if necessary, and then storedin a computer memory. In the context of this document, a computer-usableor computer-readable medium may be any medium that can contain, store,communicate, propagate, or transport the program for use by or inconnection with the instruction execution system, apparatus, or device.The computer-usable medium may include a propagated data signal with thecomputer-usable program code embodied therewith, either in baseband oras part of a carrier wave. The computer-usable program code may betransmitted using any appropriate medium, including but not limited towireless, wire line, optical fiber cable, RF, etc.

Computer program code for carrying out operations of the presentinvention may be written in any combination of one or more programminglanguages, including an object oriented programming language such asJava, Smalltalk, C++ or the like and conventional procedural programminglanguages, such as the “C” programming language or similar programminglanguages. The program code may execute entirely on the user's computer,partly on the user's computer, as a stand-alone software package, partlyon the user's computer and partly on a remote computer or entirely onthe remote computer or server. In the latter scenario, the remotecomputer may be connected to the user's computer through any type ofnetwork, including a local area network (LAN) or a wide area network(WAN), or the connection may be made to an external computer (forexample, through the Internet using an Internet Service Provider).

The present invention is described below with reference to flowchartillustrations and/or block diagrams of methods, apparatus (systems) andcomputer program products according to embodiments of the invention. Itwill be understood that each block of the flowchart illustrations and/orblock diagrams, and combinations of blocks in the flowchartillustrations and/or block diagrams, can be implemented by computerprogram instructions.

These computer program instructions may be provided to a processor of ageneral purpose computer, special purpose computer, or otherprogrammable data processing apparatus to produce a machine, such thatthe instructions, which execute via the processor of the computer orother programmable data processing apparatus, create means forimplementing the functions/acts specified in the flowchart and/or blockdiagram block or blocks. These computer program instructions may also bestored in a computer-readable medium that can direct a computer or otherprogrammable data processing apparatus to function in a particularmanner, such that the instructions stored in the computer-readablemedium produce an article of manufacture including instruction meanswhich implement the function/act specified in the flowchart and/or blockdiagram block or blocks.

The computer program instructions may also be loaded onto a computer orother programmable data processing apparatus to cause a series ofoperational steps to be performed on the computer or other programmableapparatus to produce a computer implemented process such that theinstructions which execute on the computer or other programmableapparatus provide processes for implementing the functions/actsspecified in the flowchart and/or block diagram block or blocks.

With reference now to the figures and in particular with reference toFIG. 1, an exemplary diagram of data processing environment is providedin which illustrative embodiments may be implemented. It should beappreciated that FIG. 1 is only exemplary and are not intended to assertor imply any limitation with regard to the environments in whichdifferent embodiments may be implemented. Many modifications to thedepicted environment may be made.

With reference to FIG. 1, a block diagram of a data processing system,including a flexible service processor, is shown in which illustrativeembodiments may be implemented. In this illustrative example, dataprocessing system 100 includes host PCI cache bridge 108, which providescommunications between processor 102, and main memory 104.Communications fabric bus 106 connects the host PCI cache bridge 108with audio adapter 116, SCSI host bus adapter 112, LAN adapter 110,flexible service processor, FSP processor 114, graphics adapter 118 andaudio/video adapter 122. A persistent storage in the form of disk 126,tape 128 and CD-ROM 130 are connected through SCSI host bus adapter 112to bus 106. Communications are provided by LAN adapter 110 in thisexample but may also be provided by another communication adapter unitfor protocol specific access. FSP processor 114 provides connection toFSP memory 120, and Super I/O controller 124. A display device may beattached to graphics adapter 118. The various memory attachments offlexible service processor 114 provide a capability to maintain data forlater use by the flexible support processor or made accessible to othercomponents or users.

Processor 102 serves to execute instructions for software that may beloaded into memory 104. Processor 102 may be a set of one or moreprocessors or may be a multi-core processor chip, depending on theparticular implementation. Further, processor unit 102 may beimplemented using one or more heterogeneous processor systems in which amain processor is present with secondary processors on a single chip. Asanother illustrative example, processor 102 may be a symmetricmulti-processor system containing multiple processors of the same type.

Memory 104 and persistent storage units of disk 126, tape 128, andCD-ROM 130 are examples of storage devices. A storage device is anypiece of hardware that is capable of storing information either on atemporary basis and/or a permanent basis. Memory 104, in these examples,may be, for example, a random access memory or any other suitablevolatile or non-volatile storage device. Persistent storage may takevarious forms depending on the particular implementation. For example,persistent storage may contain one or more components or devices. Forexample, persistent storage may be a hard drive, a flash memory, arewritable optical disk, a rewritable magnetic tape, or some combinationof the above. The media used by persistent storage also may beremovable. For example, a removable hard drive may be used forpersistent storage.

Communications provided by LAN adapter 110, in these examples, providesfor communications with other data processing systems or devices. Inthese examples, LAN adapter 110 is a network interface card.Communications through LAN adapter 110 may provide communicationsthrough the use of either or both physical and wireless communicationslinks.

SCSI host bus adapter 112 allows for input and output of data with otherdevices that may be connected to data processing system 100. Forexample, SCSI host bus adapter 112 may provide a connection forpersistent storage units of disk 126, tape 128, and CD-ROM 130.

Instructions for the operating system and applications or programs arelocated on persistent storage, typically from disk 126 orcomputer-readable media 134. These instructions may be loaded intomemory 104 for execution by processor 102 or into FSP memory 120 forexecution by flexible service processor 114. The processes of thedifferent embodiments may be performed by processor 102 usingcomputer-executable instructions, which may be located in a memory, suchas memory 104 or by flexible service processor 114 usingcomputer-executable instructions which may be located in FSP memory 120.These instructions are referred to as program code, computer-usableprogram code, or computer-readable program code that may be read andexecuted by a processor in processor unit 102 or flexible serviceprocessor 114. The program code in the different embodiments may beembodied on different physical or tangible computer-readable media, suchas memory 104 or persistent storage of disk 126.

Program code 132 is located in a functional form on computer-readablemedia 134 that is selectively removable and may be loaded onto ortransferred to data processing system 100 for execution by processor 102or flexible service processor 114. Program code 132 andcomputer-readable media 134 form computer program product 136 in theseexamples. In one example, computer-readable media 134 may be in atangible form, such as, for example, an optical or magnetic disc that isinserted or placed into a drive or other device that is part ofpersistent storage for transfer onto a storage device, such as a disk126 that is part of persistent storage. In a tangible form,computer-readable media 134 also may take the form of a persistentstorage, such as a hard drive, a thumb drive, or a flash memory that isconnected to data processing system 100. The tangible form ofcomputer-readable media 134 is also referred to as computer recordablestorage media. In some instances, computer recordable media 134 may notbe removable.

Alternatively, program code 132 may be transferred to data processingsystem 100 from computer-readable media 134 through a communicationslink to LAN adapter 110 and/or through a connection to super I/Ocontroller 124. The communications link and/or the connection may bephysical or wireless in the illustrative examples. The computer-readablemedia also may take the form of non-tangible media, such ascommunications links or wireless transmissions containing the programcode.

The different components illustrated for data processing system 100 arenot meant to provide architectural limitations to the manner in whichdifferent embodiments may be implemented. The different illustrativeembodiments may be implemented in a data processing system includingcomponents in addition to or in place of those illustrated for dataprocessing system 100. Other components shown in FIG. 1 can be variedfrom the illustrative examples shown. As one example, a storage devicein data processing system 100 is any hardware apparatus that may storedata. Memory 104, persistent storage such as disk 126, andcomputer-readable media 134 are examples of storage devices in atangible form.

In another example, a bus system may be used to implement communicationsfabric, bus 106 and may be comprised of one or more buses, such as asystem bus or an input/output bus. Of course, the bus system may beimplemented using any suitable type of architecture that provides for atransfer of data between different components or devices attached to thebus system. Additionally, a communications unit may include one or moredevices used to transmit and receive data, such as a modem or a networkadapter. Further, a memory may be, for example, memory 104 or a cachesuch as found in an interface and memory controller hub that may bepresent in communications fabric 106.

In an illustrative embodiment, using the example of system 100 of FIG.1, a system may have the vital product data information moved from anembedded location within hardware components, to a storage location intables in flexible service processor (FSP) memory 120 on a flexiblesupport processor, flexible service processor 114. The vital productdata in tables may then be used to provide vital product data collectionmore effectively from components sharing common information whilemerging unique data characterizing components as required. The collectedand merged data may then more accurately reflect the hardwareenvironment to users of the hardware information. Resource identifiersare assigned to each resource within a system and are used to crossreference between each of the tables.

Flags in the vital product data tables called hardware address tables,module tables and resource location code arrays will instruct the vitalproduct data firmware to collect the vital product data from identifiedsecure devices known as “smart-chips” and from serially electricallyerasable programmable read-only memory chips (SEEPROMs). Aftercollecting the information from the hardware a soft copy, in the form adata file, will be created of this vital product data for all resourceidentifiers which are using the secure device and serial electricallyerasable programmable read-only memory vital product data. Only the softcopies of the data are stored on the flexible service processorpersistent cache of FSP memory 120 and reported to the external users.For example, in a four processor subsystem, using this methodology, thecommon vital product data, collected from the single secure device ofthe four processors, along with the characterization data unique to eachprocessor module, is represented in the tables correctly to now indicatethere are four processor resource identifiers in the processorsubsystem.

With reference to FIG. 2, a block diagram of components of a vitalproduct data manager, in accordance with illustrative embodiments isshown. In an example of vital product data management 200, vital productdata manager 202 is shown within flexible service processor (FSP) memory120 of flexible service processor 114 of FIG. 1.

A set of data structures are provided, in one example a set of tables,in the form of a first, second and third tables respectively. The set oftables, in the example, comprises a hardware vital product data addresstables (HVAT) 204 contained within vital product data manager 202 as area set of resource location code arrays (RLCA) 206 and a set of moduletables (MODU) 208. Information contained in the sets of tables andarrays contain data used to drive the collection and processing of vitalproduct data and characterization data for resources of the dataprocessing system. Each of the data structures implemented as a set oftables in the example may be implemented as described or combined into asingle table, list, linked list, array, file, module or other formsuitable for containing the described information.

Vital product data receiver 210 works in combination with vital productdata writer 212 to collect vital product data from secure vital productdata devices, and unsecure serial electrically erasable programmableread-only memory type devices, on the component hardware and store theinformation as electronic data files. Each includes logic capability aswell as context awareness to determine a next entry in a table or tomerge a portion of a data with an existent portion of data as in a copyoverwrite operation.

Hardware vital product data address table 204 provides informationspecific to a resource entry indicating the location of a secure devicecontaining vital product data for the current resource. In addition,flags may be found within an entry directing the processing of theentry. For example, the resource entry may indicate by a flag that theentry should copy the vital product data into a set of other resourcespecific files and that an entry received from a secure device is to bemodified by later obtained data.

Resource location code array 206 is a data structure representing eachresource of the system. The data structure typically represents theparent and child relationships in the form of a hierarchy. Each resourcehas an entry in the array. An entry in the resource location code arrayalso provides an indication as to whether the resource includes a vitalproduct data chip.

A module table 208 contains a set of entries of resource pathstatements. Each path statement leads to an unsecure device containingvital product data in the form of characterization data. For example a“modu entry” would have a resource identifier portion identifying aspecific resource and an associated device path used to locate theserial electrically erasable programmable read-only memory devicecontaining characterization data of the specific device. When modulevital product data is required, the module table 208 provides the pathinformation need to obtain the respective information.

The tables just described are separate but related in that processing ofvital product data may require information from all three tables tocomplete processing for an entry in the resource location code arraytable 206. Although shown as separate tables the information can belogically or physically combined as an alternative and still provide thefunction and content needed.

Tagger 214 adds tags providing processing directives to the informationin the previously mentioned sets of tables and arrays where and whenneeded. For example, the tags provide information indicating use of adata collection template or instruction to copy or modify data dependingupon processor support context and requirements.

With reference to FIG. 3, a block diagram of a hardware environment of aprocessor subsystem, in accordance with illustrative embodiments isshown. Processor subsystem 300 includes a number of processors forming aset of processors and a processor backplane 302. Processor backplane 302contains backplane vital product data 304 on a SEEPROM, and processorvital product data for the processor pluggable processor module on asecure “smart-chip” device 306. The “smart-chip” is a secure device,used to contain vital product data for each of the four processormodules shown. The solid lines represent field replaceable units thatare pluggable. Dash lines represent resources within field replaceableunits that are not pluggable and thus may not be replaced at thespecific component level. For example, backplane vital product data 304is a dashed line indicating replacement only as part of the largerbackplane 302 unit. Processor RID 1000 324 is shown with a solid line,representing a field replaceable unit that may be replaced as acomponent independent of backplane 302.

Four processor modules are represented by processor resource identifier1000 324, processor resource identifier 1001 326, processor resourceidentifier 1002 328, and processor resource identifier 1003 330. Each ofthe processor resources has an associated vital product data in the formof vital product data 308-314. In addition, each processor moduleresource, in the set of processors, may comprise one or more processorcores as in processor core 316 having cores C1 and C2. Each processorresource 324-330 has core entries of 316-322 respectively.

In an illustrative embodiment, a system may have the vital product dataaccess information moved from embedded within hardware to a storagelocation in tables on a flexible support processor. These tables definevarious information including device paths to access field replaceableunit vital product data, module vital product data, light emittingdiodes (LEDs), as well as information for location codes, and presencedetect. Using the data tables provides a capability to address thepreviously stated issues.

The flags in the vital product data tables of hardware access tables,module tables, and resource identifier location code arrays willinstruct the vital product data firmware to collect the vital productdata from one secure device first. After collecting the information fromthe hardware, a soft copy, in the form a data file, will be created ofthis vital product data for all resource identifiers which are using thesingle secure device vital product data. Only the soft copies of thedata are stored on the flexible service processor persistent cache andreported to the external users.

Using this methodology the processor vital product data collected fromone device for a four processor subsystem, is then correctly representedto indicate there are four processor resource identifiers which are fourunique field replaceable units in the system. In addition to making thecopies of the processor field replaceable unit vital product data readfrom the secure device, each of these copies is customized using datafrom the module vital product data to create unique field replaceableunit vital product data for each of the processor field replaceable unitresource identifiers on the system. The customization is performed byobtaining the part number and serial number for the field replaceableunit from the module vital product data and updating these values in theappropriate copy of the processor field replaceable unit vital productdata read from the secure device. In a system configuration comprised ofmultiple processor backplanes, wherein each backplane has fourprocessors, the above-mentioned process is repeated for each of thebackplanes.

With reference to FIG. 4, a block diagram of a hardware environment of aprocessor subsystem, in accordance with illustrative embodiments isshown. Processor subsystem 400 includes a number of hardwired processorsand a processor backplane 402. Processor backplane 402 containsprocessor vital product data on “smart-chip” 406, which is the fieldreplaceable unit vital product data. The “smart-chip” 406 is a securedevice, used to contain vital product data from each of the fourprocessor modules shown. There is no entry for backplane vital productdata 304 as in FIG. 3. Each of the processor resources 424-430 isrepresented by a dashed line. Dashed lines represent resources that arenot pluggable and thus, may not be replaced at the specific componentlevel. For example, processor “smart-chip” 406 is represented using adashed line indicating replacement only as part of the larger backplane402 unit. Processor RID 1000 424 is shown with a dashed line,representing a resource that may be replaced with the backplane 402.

Four processor modules are represented by processor resource identifier1000 424, processor resource identifier 1001 426, processor resourceidentifier 1002 428, and processor resource identifier 1003 430. Each ofthe processor resources has an associated vital product data in the formof vital product data 408-414. In addition, each processor resource maycomprise one or more processor cores as in processor core 416 havingcores C1 and C2. Each processor resource 424-430 has core entries of416-422 respectively.

With reference to FIG. 5, a textual representation of data tables andarrays is shown in accordance with illustrative embodiments. The datatables and arrays 500 depicts a sample of entries of three sets oftables and arrays. The first set of data tables is RLCA 502 representingthe set of resource location arrays. The second entry, HVAT 504,represents the hardware vital product address tables, and MODU 506represents the module vital product data address tables.

RLCA 502 identifies types of resources and information. For example,element 508 signifies this entry is for a processor resource. The “pf”tag entry 510 indicates the entry is a processor field replaceable unittype. Entry 512 indicates the resource identifier number “1000.” Theentry 514, using a “1” tag, indicates that location information followsthe tag. Entry 516, using an “i” tag, indicates the information ispassed to the operating system. Entry 534 is a “u” tag indicating aunique vital product data exists for this resource. Entry 536 is a “t”tag indicating vital product data used for this resource identifier is atemplate from a sibling of this field replaceable unit type. Todetermine which sibling provides the data, traverse the resourcelocation code array backward from the entry having the “t” tag to afirst entry encountered with a “u” tag.

HVAT 504 comprises a number of entries describing the addressinginformation needed to access the hardware when collecting and updatinginformation regarding the field replaceable unit vital product data.Entry 518 indicates this is a processor resource entry. Entry 520represents the resource identifier number, in this case “1000.” Entry522 indicates the hardware device path to the “smart-chip” secure devicefor the resource.

New tags are introduced to direct the collection and processing of data.Entry 524 is a “mod” flag indicating a modify operation is performed.Original data collected from the vital product data will be modifiedwith additional data collected for this resource. Original data iscopied from the device identified in the path defined earlier, accordingto entry 526 identifying a “copy” flag. Data is copied to createinformation for resource identifiers 1001-1003. Entry 528 is a “tmplt”flag indicating a template from resource 1000 is to be used when data iscopied into the resource data file. When the copy operation completes,the data is modified as well using part number and serial number datafrom the characterization information for resource 1001.

MODU 506 provides path information to the serial electrically erasableprogrammable read-only memory device for the module vital product data.This module vital product data is characterization information unique tothe specific processor module and typically includes the part number andserial number of the resource. For example, entry 530 identifies a pathof “/dev/iic3/0/6/0” is to be used to access the serial electricallyerasable programmable read-only memory containing the modulecharacterization information for processor subsystem “7” identified inentry 532.

With reference to FIG. 6, a block diagram of data table and vitalproduct data relationships, in accordance with illustrative embodimentsis shown. In the example, vital product data relationship 600 containsfour processors and a single “smart-chip” secure device. The fourprocessors are represented by processor RID 1000 308, processor RID 1001310, processor RID 1002 312, and processor RID 1003 314 of FIG. 3.

The vital product data tables called hardware vital product data addresstable (HVAT) 204, resource identifier location code arrays (RLCA) 206and module table 208 of FIG. 2 act as control files to ensure correctprocessing of the collected data. The control file of the hardware vitalproduct data address table is modified to include use of specialdescriptive flags. The descriptive flag types, as inserted by tagger 214of FIG. 2 in one example, comprise a “:copy:” to designate a copy, a“:tmplt:” designating a template and a “:mod:” designating a modify. Forthe first occurrence of the processor resource identifiers on aprocessor field replaceable unit having a single node or processorbackplane for a multi node system, the hardware vital product dataaddress table entries will contain the device path to the “smart-chip”secure device. This information is represented by processor “smart-chip”306. Following the first flag type of a “:copy:” designator, in an entryin the table, is a list of resource identifier numbers which are toreceive a copy of the template information read from the “smart-chip”device. The copy operation 612 is represented by copy processor vitalproduct data for resource identifier 1000 from hardware of flexiblesupport processor firmware 602. The copy operation uses the vitalproduct data (VPD) receiver 210 and vital product data (VPD) writer 212of FIG. 2, retrieves the processor serial number and part number for arespective processor module from the module characterizationinformation, and updates the corresponding entry from the “smart-chip”secure device.

The subsequent processor resource identifiers which are to use the same“smart-chip” device data as the template for the respective vitalproduct data will have a special hardware vital product data addresstable entry of a second flag type“:tmplt:” that points back to theresource identifier that has the “smart-chip” secure device path.Flexible service processor firmware will read the “smart-chip” securedevice vital product data once and use the data obtained to create a setof data files. In this example, all four of the “svpd.<RID#>.dat” datafiles. In the example, a naming convention of “svpd” represents thesystem vital product data, “<RID#>” represents the processor resourceidentifier number, and “.dat” represents a data file extension type. Theresult is then shown as data files “svpd.1000.dat” 604, “svpd.1001.dat”606, “svpd.1002.dat” 608, and “svpd.1003.dat” 610. The data files arestored within the flexible service processor (FSP) file system 614.

In the system example where each of the processor resource identifiersrepresents a field replaceable unit, a third flag type “:mod:” is addedto the hardware vital product data address table entry to indicate thatthe vital product data code needs to retrieve the field replaceable unitpart number and serial number values from the processor module vitalproduct data. The retrieved data replaces the corresponding values inthe part number and serial number fields in the data previously readfrom the “smart-chip” to create the field replaceable units vitalproduct data which is stored in the “svpd.<RID #>.dat” data files.

The first entry in the hardware vital product data address table forprocessor 1000 includes a source device path address“sced:7,/dev/uart/0/0/15/0,24:rh:1040” to the secure device or“smart-chip” in which the vital product data is stored. The entry alsoincludes the use of the two flags “:mod:copy:” indicating information isto be copied and the serial number and part number of the specificprocessor is to replace the copied data from the secure device. The samemethod without the flag indicating “:mod:” is used for platforms wherethere are multiple processor modules on a single processor fieldreplaceable unit. For example, on a system where there is a singleprocessor field replaceable unit, there is one “smart-chip” securedevice and the data read from the secure device is to be used as atemplate for the vital product data for all sixteen processor modulessoldered on the processor field replaceable unit having sixteen resourceidentifiers.

With reference to FIG. 7 a block diagram of a vital data product managerand processor subsystem in accordance with illustrative embodiments isshown. FIG. 7 provides an overview of the data management interactionbetween the hardware elements of the flexible service processor 114 andthe processor subsystem 300. Components of flexible service processor114 interact with data elements of processor subsystem 400 to extractboth types of vital product data for placement in the memory 120 as datafiles for use by other component of the system, such as the operatingsystem itself.

Flexible service processor 114 and memory 120 of FIG. 1 is now shownwith flexible service processor (FSP) firmware 612 and flexible serviceprocessor (FSP) file system 614 components of FIG. 6. In additionfirmware 612 includes components of VPD receiver 210, VPD writer 212 andtagger 214 of FIG. 2. Flexible service processor (FSP) file system 614further includes components of dat files 604-610 of FIG. 6. Memory 120also includes the tables of RLCA 204, HVAT 206 and MODU 208 of FIG. 2.

Using the example configuration of FIG. 7, a first table, RLCA 204, isread by firmware 612 to determine a resource. A current resource isidentified and a corresponding entry for the resource is located in asecond table, HVAT 206. A path statement indicating secure device“smart-chip” 306 is found. When a current resource entry in HVAT 206indicates both a “copy” and a “mod” flag, common data from a securedevice is to be merged with additional resource specific data fromunsecured devices of the respective resources. Replaceable unit datafrom the referenced “smart-chip”306 secure device and characterizationfrom the unsecured resource specific devices, serial electricallyerasable programmable read-only memories 408-414 are combined to producean updated “dat” file for each resource.

VPD receiver 210 obtains the vital product data for the fieldreplaceable unit that comprises processor subsystem 300. Data obtainedfrom “smart-chip” 306 is copied into a “dat” file dat 604 by VPD writer212. The “copy” flag in the current resource entry in HVAT 206 indicatesthe “smart-chip” data is to “seed” the “dat” 606-610 files as well. Atthis stage, each of the “dat” files has the same common data.

The “mod” flag directs vital product data manager 202 components tocontinue processing data for components of processor subsystem 300. Foreach resource identified in the copy list of the copy” flag, an entry inthe third table, MODU 208 table, is found. The modu entry found providesthe path to the unsecure device containing characterization data for theresource. VPD receiver 210 gets the vital product data in the form ofcharacterization data for each resource identified. VPD writer 212updates each respective “dat” file with the respective resourcecharacterization data. For example, characterization data typicallyincludes a part number and serial number value uniquely identifying theresource.

The data flow may be seen from “smart-chip” 306 into each of “dat” files604-610. The single line indicates common data of the secure device isshared across the data files. A corresponding flow occurs from eachunsecure device 308-314 containing characterization data for eachprocessor resource 324-330 of processor subsystem 300. Here, themultiple separate lines indicate resource specific data is added to thedata files from the processor resource entries.

With reference to FIGS. 8A and 8B, are flowcharts of a process of vitalproduct data management, in accordance with illustrative embodiments.Process 800 is an example of a data collection sequence as performed byvital product data manager 202 of FIG. 2.

Process 800 starts (step 802) and begins processing of an entry in theresource identification location code array (step 804). The resourceidentification location code array is the first control file to beprocessed. A determination is made whether there are more resourcelocation code array entries to process (step 806). If there are moreentries, a “yes” result is obtained. If the determination is there areno more entries, a “no” result is obtained. When a “no” result isobtained in step 806, process 800 terminates thereafter (step 810).

When a “yes” is obtained in step 806, the resource location code arrayentry is examined for a “u” tag to determine if this resource has aunique vital product data chip to be read (step 808). When a “u” tag islocated in the resource location code array entry a “yes” result isobtained. When no “u” tag is found in the entry a “no” result isobtained. When a “no” result is obtained in step 808, process 800 skipsahead to step 822. When a “yes” result is obtained in step 808, thehardware vital product data address table is examined to find the entrycorresponding to the resource identifier number of the entry in theresource location code array table (step 812). The device path of theentry in the hardware vital product data address is used as the resourceidentifier path setting to the information “smart-chip” (step 814).Having obtained the path information, use the path information obtainedfrom the hardware vital product address table to read the fieldreplaceable unit vital product data from the information secure data“smart-chip.” Store the data read in the flexible service processor(FSP) file system for this resource identifier (RID#) into a data filenames “svpd.<RID#>.dat (step 816).

A determination is made whether the hardware vital product data addresstable entry contains a “:copy:list of additional RID#'s” indicating useof a “:copy:” flag type (step 818). When a determination is made that a“copy:list” is found, a “yes” results. When no “copy:list” is found, a“no” results. When a “no” results in step 818, process 800 skips to step822. When a “yes” results in step 818, data read, for each of theresource identifiers in the list of additional identifiers, from thehardware is stored in the flexible service processor file system files(step 820). A determination is then made as to whether the resourcelocation code array entry contains a “t” tag (step 822). When a “t” tagis found a “yes” result is obtained (step 822). When there is no “t”tag, a “no” result is obtained. When a “no” result is obtained in step822, process 800 skips to step 828.

When a “yes” result is obtained in step 822, a search is initiated tofind the entry in the hardware vital product information address tablefor the corresponding resource identifier (step 824). The“svpd.<RID#>.dat” file for this resource has already been created usingthe data read from the RID specified by the “:tmplt:” tag, or flag type,in this hardware vital product data address table entry (step 826).

A determination is made whether the hardware vital product data addresstable entry for the current resource identifier contains a “:mod:” tagor flag type (step 828). When a “:mod:” tag is found, a “yes” result isobtained. When no “:mod:” tag is found, a “no” result is obtained. Whena “no” result is obtained, process 800 loops back to step 806. When a“yes” is obtained in step 828, a serial number and part number keywordfor the field replaceable unit vital product data in the“svpd.<RID#>.dat” file needs to be modified using the data read from themodule vital product data chip, “smart-chip.” (step 830).

A search is performed to find the entry in the MODU table for theresource identifier (step 832). Having found the entry, the device pathfrom the MODU table entry is used to read the module vital product datachip information (step 834). An operation to parse the module vitalproduct data is performed to get the serial number and part numbervalues (step 836). The serial number and part number values are thenwritten into the serial number and part number fields of the“svpd.<RID#>.dat” file (step 838). Process 800 loops back to step 806 toprocess as before (step 840).

An illustrative embodiment provides a capability to collect the vitalproduct data from the various processor resources identified. Thecollected data more accurately depicts the processor information,including serial number and part number information, obtained from thesystem in a ready to use form. The data is then stored in data files andmade accessible to other components processes or users.

In an illustrative embodiment, a system may have the vital product dataaccess information moved from being embedded within hardware to astorage location in tables on a flexible service processor. These tablesdefine various information including device paths to access fieldreplaceable unit vital product data, module vital product data, lightemitting diodes, as well as information for location codes, and presencedetect. Using the data tables provides a capability to address thepreviously stated issues.

The flags, in the vital product data tables called hardware accesstables, modu tables, and resource identifier location code arrays willinstruct the vital product data firmware to collect the vital productdata from one secure device first. After collecting the information fromthe hardware, a soft copy, in the form a data file, is created of thevital product data for all resource identifiers which are using the“smart-chip” secure device vital product data. Only the soft copies ofthe data are stored on the flexible service processor persistent cacheand reported to the external users.

Using this methodology, the vital product data collected from one devicefor a four processor node or subsystem, is represented to indicate thereare four processor resource identifiers in the node. On some examplesystems, this may be all that is required to associate the correctprocessor field replaceable unit vital product data with each of theprocessor resource identifiers. In another example system, in additionto making the copies of the processor field replaceable unit vitalproduct data read from the secure device on the node, each of thesecopies is customized using data from the module vital product data tocreate unique field replaceable unit vital product data for each of theprocessor field replaceable unit resource identifiers on the node. Thecustomization is performed by obtaining the part number and serialnumber for the field replaceable unit from the module vital product dataand updating these values in the appropriate copy of the processor fieldreplaceable unit vital product data read from the secure device. In amaximum configuration there are eight nodes, wherein each node has fourprocessors. Therefore, the above mentioned process is repeated for eachof the eight nodes.

The flowchart and block diagrams in the figures illustrate thearchitecture, functionality, and operation of possible implementationsof systems, methods and computer program products according to variousembodiments of the present invention. In this regard, each block in theflowchart or block diagrams may represent a module, segment, or portionof code, which comprises one or more executable instructions forimplementing the specified logical function(s). It should also be notedthat, in some alternative implementations, the functions noted in theblock may occur out of the order noted in the figures. For example, twoblocks shown in succession may, in fact, be executed substantiallyconcurrently, or the blocks may sometimes be executed in the reverseorder, depending upon the functionality involved. It will also be notedthat each block of the block diagrams and/or flowchart illustration, andcombinations of blocks in the block diagrams and/or flowchartillustration, can be implemented by special purpose hardware-basedsystems that perform the specified functions or acts, or combinations ofspecial purpose hardware and computer instructions.

The terminology used herein is for the purpose of describing particularembodiments only and is not intended to be limiting of the invention. Asused herein, the singular forms “a”, “an” and “the” are intended toinclude the plural forms as well, unless the context clearly indicatesotherwise. It will be further understood that the terms “comprises”and/or “comprising,” when used in this specification, specify thepresence of stated features, integers, steps, operations, elements,and/or components, but do not preclude the presence or addition of oneor more other features, integers, steps, operations, elements,components, and/or groups thereof.

The corresponding structures, materials, acts, and equivalents of allmeans or step plus function elements in the claims below are intended toinclude any structure, material, or act for performing the function incombination with other claimed elements as specifically claimed. Thedescription of the present invention has been presented for purposes ofillustration and description, but is not intended to be exhaustive orlimited to the invention in the form disclosed. Many modifications andvariations will be apparent to those of ordinary skill in the artwithout departing from the scope and spirit of the invention. Theembodiment was chosen and described in order to best explain theprinciples of the invention and the practical application, and to enableothers of ordinary skill in the art to understand the invention forvarious embodiments with various modifications as are suited to theparticular use contemplated.

The invention can take the form of an entirely hardware embodiment, anentirely software embodiment or an embodiment containing both hardwareand software elements. In a preferred embodiment, the invention isimplemented in software, which includes but is not limited to firmware,resident software, microcode, etc.

Furthermore, the invention can take the form of a computer programproduct accessible from a computer-usable or computer-readable mediumproviding program code for use by or in connection with a computer orany instruction execution system. For the purposes of this description,a computer-usable or computer-readable medium can be any tangibleapparatus that can contain, store, communicate, propagate, or transportthe program for use by or in connection with the instruction executionsystem, apparatus, or device.

The medium can be an electronic, magnetic, optical, electromagnetic,infrared, or semiconductor system (or apparatus or device) or apropagation medium. Examples of a computer-readable medium include asemiconductor or solid state memory, magnetic tape, a removable computerdiskette, a random access memory (RAM), a read-only memory (ROM), arigid magnetic disk and an optical disk. Current examples of opticaldisks include compact disk-read only memory (CD-ROM), compactdisk-read/write (CD-R/W) and DVD.

A data processing system suitable for storing and/or executing programcode will include at least one processor coupled directly or indirectlyto memory elements through a system bus. The memory elements can includelocal memory employed during actual execution of the program code, bulkstorage, and cache memories which provide temporary storage of at leastsome program code in order to reduce the number of times code must beretrieved from bulk storage during execution.

Input/output or I/O devices (including but not limited to keyboards,displays, pointing devices, etc.) can be coupled to the system eitherdirectly or through intervening I/O controllers.

Network adapters may also be coupled to the system to enable the dataprocessing system to become coupled to other data processing systems orremote printers or storage devices through intervening private or publicnetworks. Modems, cable modem and Ethernet cards are just a few of thecurrently available types of network adapters.

The description of the present invention has been presented for purposesof illustration and description, and is not intended to be exhaustive orlimited to the invention in the form disclosed. Many modifications andvariations will be apparent to those of ordinary skill in the art. Theembodiment was chosen and described in order to best explain theprinciples of the invention, the practical application, and to enableothers of ordinary skill in the art to understand the invention forvarious embodiments with various modifications as are suited to theparticular use contemplated.

1. A computer implemented method for resource data management, thecomputer implemented method comprising: determining whether a resourceentry in a resource location code array in a first data structure for aset of resources is unique in which the resource entry is a currentresource; responsive to a determination that the current resource isunique, identifying a corresponding entry in hardware vital product dataaddress information in a second data structure and obtaining areplaceable unit data for the current resource from the hardware vitalproduct data address information; storing a replaceable unit data forthe current resource to form a current data file; determining whetherthe corresponding entry contains a copy indicator; responsive to adetermination that the corresponding entry contains a copy indicator,copying the current data file into a set of data files by locating atemplate indicator in the resource entry in the resource location codearray in the first data structure referring to the current resource andusing the replaceable unit data as a template, wherein each data filerepresents a resource identified by the copy indicator; determiningwhether the corresponding entry has a modify indicator; and responsiveto a determination that the corresponding entry has a modify indicator,identifying a path to characterization data in a third data structurecomprising path information for the location of the characterizationdata for the set of resources and updating each data file in the set ofdata files with a characterization data for a respective resource in theset of data files using the identified path to the to thecharacterization data.
 2. The computer implemented method of claim 1,wherein the characterization data contains serial number and part numberdata.
 3. A data processing system for resource data management, the dataprocessing system comprising: a bus; a memory connected to the bus,wherein the memory comprises computer-executable instructions; acommunications adapter connected to the bus; a display adapter connectedto the bus; a processor connected to the bus, wherein the processorexecutes the computer-executable instructions to direct the dataprocessing system to: determine whether a resource entry in a resourcelocation code array in a first data structure for a set of resources isunique in which the entry is a current resource; responsive to adetermination that the current resource is unique, identify acorresponding entry in hardware vital product data address informationin a second data structure and obtain a replaceable unit data for thecurrent resource from the hardware vital product data addressinformation; store a replaceable unit data for the current resource toform a current data file; determine whether the corresponding entrycontains a copy indicator; responsive to a determination that thecorresponding entry contains a copy indicator, copy the current datafile into a set of data files by locating a template indicator in theresource entry in the resource location code array in the first datastructure referring to the current resource and using the replaceableunit data as a template, wherein each data file represents a resourceidentified by the copy indicator; determine whether the correspondingentry has a modify indicator; and responsive to a determination that thecorresponding entry has a modify indicator, identify a path tocharacterization data in a third data structure comprising pathinformation for the location of the characterization data for the set ofresources and update each data file in the set of data files with acharacterization data for a respective resource in the set of data filesusing the identified path to the to the characterization data.
 4. Thedata processing system of claim 3, wherein the characterization datacontains serial number and part number data.
 5. A computer programproduct for resource data management, the computer program productcomprising a computer-readable, tangible storage device, tangiblyembodying computer-executable instructions thereon, thecomputer-executable instructions comprising: computer-executableinstructions for determining whether a resource entry in a resourcelocation code array in a first data structure for a set of resources isunique in which the entry is a current resource; computer-executableinstructions responsive to a determination that the current resource isunique, for identifying a corresponding entry in hardware vital productdata address information in a second data structure and obtaining areplaceable unit data for the current resource from the hardware vitalproduct data address information; computer-executable instructions forstoring a replaceable unit data for the current resource to form acurrent data file; computer-executable instructions for determiningwhether the corresponding entry contains a copy indicator;computer-executable instructions responsive to a determination that thecorresponding entry contains a copy indicator, for copying the currentdata file into a set of data files by locating a template indicator inthe resource entry in the resource location code array in the first datastructure referring to the current resource and using the replaceableunit data as a template, wherein each data file represents a resourceidentified by the copy indicator; computer-executable instructions fordetermining whether the corresponding entry has a modify indicator; andcomputer-executable instructions responsive to a determination that thecorresponding entry has a modify indicator, for identifying a path tocharacterization data in a third data structure comprising pathinformation for the location of the characterization data for the set ofresources and updating each data file in the set of data files with acharacterization data for a respective resource in the set of data filesusing the identified path to the to the characterization data.
 6. Thecomputer program product of claim 5, wherein computer-executableinstructions for identifying the path to the characterization datacomprises identifying a device containing the characterization data. 7.The computer program product of claim 5, wherein the characterizationdata contains serial number and part number data.